2188019 has 12 divisors (see below), whose sum is σ = 2379864. Its totient is φ = 2010624.

The previous prime is 2188001. The next prime is 2188031. The reversal of 2188019 is 9108812.

2188019 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-2188019 is a prime.

It is a super-2 number, since 2×2188019² = 9574854288722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2187982 and 2188000.

It is not an unprimeable number, because it can be changed into a prime (2188049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19307 + ... + 19419.

It is an arithmetic number, because the mean of its divisors is an integer number (198322).

2^2188019 is an apocalyptic number.

2188019 is a deficient number, since it is larger than the sum of its proper divisors (191845).

2188019 is a wasteful number, since it uses less digits than its factorization.

2188019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214 (or 197 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 29.

The square root of 2188019 is about 1479.1953893925. The cubic root of 2188019 is about 129.8226180371.

The spelling of 2188019 in words is "two million, one hundred eighty-eight thousand, nineteen".